I have one. I got it for Christmas two years ago. I think I've used it once (in an actual webcam conference, I've taken pictures with it, though). I get too nervous, shy and awkward. So, I can see where you're coming from. I guess my nervousness about it just isn't as strong as yours. And that's fine. At least there is some relation there, heh.
Anyway, I think it would be good for you to get a webcam. No matter how uncomfortable it might make you feel, it could help you to the road of recovery. It's a small step, but wouldn't hurt.